You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

tonto
23.3.15

This version was deleted from PyPI around 2024-02-10. Installing fails with:
$ pip3 install tonto==23.3.15 ERROR: Could not find a version that satisfies the requirement tonto==23.3.15
View other deleted versions of tonto

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2024-02-09/ \ tonto==23.3.15
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Or, download files manually

And install manually via pip:
tonto-23.3.15.tar.gz (10.4KB)